Simplex Trading
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Simplex Trading’s United Microelectronic UMC Stock Holding History

Simplex Trading’s Portfolio UMC Stock Details UMC Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		– Sell
-51,364
Closed -$878K – 10367
2026
Q1 		$461K Buy
+51,364
New +$501K ﹤0.01% 3357
2025
Q4 		– Sell
-2,430
Closed -$18K – 10144
2025
Q3 		$18K Sell
2,430
-1,608
-40% -$11.4K ﹤0.01% 7431
2025
Q2 		$30K Sell
4,038
-8,702
-68% -$64.6K ﹤0.01% 6410
2025
Q1 		$91K Sell
12,740
-3,131
-20% -$19.9K ﹤0.01% 5154
2024
Q4 		$103K Sell
15,871
-36,582
-70% -$262K ﹤0.01% 5151
2024
Q3 		$441K Buy
52,453
+43,567
+490% +$364K ﹤0.01% 3727
2024
Q2 		$77K Buy
+8,886
New +$73.3K ﹤0.01% 5649
2022
Q3 		– Sell
-172,633
Closed -$1.14M – 10940
2022
Q2 		$1.17M Buy
172,633
+7,730
+5% +$63.4K ﹤0.01% 2447
2022
Q1 		$1.5M Sell
164,903
-14,445
-8% -$143K ﹤0.01% 2403
2021
Q4 		$2.1M Buy
179,348
+124,314
+226% +$1.38M ﹤0.01% 1994
2021
Q3 		$510K Hold
55,034
– – ﹤0.01% 4085
2021
Q2 		$520K Sell
55,034
-41,974
-43% -$393K ﹤0.01% 4108
2021
Q1 		$883K Buy
97,008
+25,481
+36% +$236K ﹤0.01% 2564
2020
Q4 		$602K Buy
71,527
+41,393
+137% +$270K ﹤0.01% 3183
2020
Q3 		$144K Buy
30,134
+11,100
+58% +$41.2K ﹤0.01% 4512
2020
Q2 		$50K Buy
19,034
+15,869
+501% +$39.9K ﹤0.01% 5496
2020
Q1 		$6K Buy
+3,165
New +$7.98K ﹤0.01% 6776
2018
Q4 		– Sell
-700
Closed -$1.34K – 7866
2018
Q3 		$1K Buy
+700
New +$1.91K ﹤0.01% 7235

Other funds holding UMC

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return
Rafferty Asset Management
Rafferty Asset Management New York $43.9B AUM 121.74% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $84.2B AUM 55.88% 1-Year Est. Return
Man Group
Man Group London, United Kingdom $62.7B AUM 29.77% 1-Year Est. Return

Simplex Trading's UMC Position: Q2 2026 in Review

Simplex Trading sold out of United Microelectronic (UMC) in Q2 2026, closing a stake of 51,364 shares — an estimated $878K sold.

Simplex Trading first reported a position in UMC in Q3 2018 and held it in 18 quarters. The position peaked at $2.1M in Q4 2021. 362 funds tracked by Wall St. Rank hold UMC as of Q2 2026.

  • Simplex Trading reported no remaining United Microelectronic position as of Q2 2026 after selling out during the quarter.
  • Simplex Trading sold 51,364 United Microelectronic shares in Q2 2026, an estimated $878K.
  • Simplex Trading first reported a position in United Microelectronic in Q3 2018 and held it in 18 quarters.
  • Simplex Trading's United Microelectronic position peaked at $2.1M in Q4 2021.
  • 362 funds tracked by Wall St. Rank held United Microelectronic as of Q2 2026.

Based on Simplex Trading's 13F filing for Q2 2026, filed 12 Aug 2026.